8461642573 has 4 divisors (see below), whose sum is σ = 8473888768. Its totient is φ = 8449396380.

The previous prime is 8461642561. The next prime is 8461642597. The reversal of 8461642573 is 3752461648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8461642573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461643573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6122061 + ... + 6123442.

It is an arithmetic number, because the mean of its divisors is an integer number (2118472192).

Almost surely, 2^8461642573 is an apocalyptic number.

It is an amenable number.

8461642573 is a deficient number, since it is larger than the sum of its proper divisors (12246195).

8461642573 is a wasteful number, since it uses less digits than its factorization.

8461642573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12246194.

The product of its digits is 967680, while the sum is 46.

The square root of 8461642573 is about 91987.1870044954. The cubic root of 8461642573 is about 2037.7530826832.

The spelling of 8461642573 in words is "eight billion, four hundred sixty-one million, six hundred forty-two thousand, five hundred seventy-three".